@charset "utf-8";
.box {
    width: 500px;
    height: 500px;
    border-width: 1px;
    border-style: solid;
    background-color: #E0F193;
}
.box .item1 {
    width: 33%;
    height: 100px;
    background-color: #FF0004;
    float: left;
}
.box .item2 {
    background-color: #00FF05;
    width: 33%;
    height: 100px;
    float: left;
}
.box .item3 {
    background-color: #D8FF00;
    width: 34%;
    height: 100px;
    float: right;
}
.box2 {
    background-color: #EBF998;
    width: 500px;
    height: 500px;
    border-width: 1px;
    border-style: solid;
}
.box2 .item1 {
    height: 100px;
    background-color: #FF0004;
    float: left;
    margin-left: 100px;
    width: 100px;
}
.box2 .item2 {
    background-color: #32FF00;
    height: 100px;
    float: left;
    width: 100px;
}
.box2 .item3 {
    background-color: #00B3FF;
    height: 100px;
    float: left;
    width: 100px;
}
.box3 {
    background-color: #E0FF00;
    border-width: 1px;
    border-style: solid;
    width: 500px;
    height: 500px;
}
.box3 .item1 {
    height: 100px;
    width: 50%;
    background-color: #FF0004;
    float: left;
    margin-left: 100px;

}
.box3 .item2 {
    background-color: #0044FF;
    height: 100px;
    float: left;
    width: 25%;
    clear: left;
    margin-left: 100px;
}
.box3 .item3 {
    height: 100px;
    background-color: #0074FF;
    float: left;
    width: 25%;
    clear: right;
}
